PFHydro: A New Watershed-Scale Model for Post-Fire Runoff Simulation

被引：24

作者：

Wang, Jun ^{[1
]}

Stern, Michelle A. ^{[2
]}

King, Vanessa M. ^{[1
]}

Alpers, Charles N. ^{[2
]}

Quinn, Nigel W. T. ^{[3
]}

Flint, Alan L. ^{[2
]}

Flint, Lorraine E. ^{[2
]}

机构：

[1] US Bur Reclamat, Sacramento, CA 95825 USA

[2] US Geol Survey, Calif Water Sci Ctr, Sacramento, CA USA

[3] Berkeley Natl Lab, Berkeley, CA USA

来源：

ENVIRONMENTAL MODELLING & SOFTWARE | 2020年 / 123卷

关键词：

Wildfire effects; Post-fire runoff simulation; Watershed model; Soil water repellence; FOREST-FIRE; RAINFALL INTERCEPTION; SOIL HYDROPHOBICITY; OVERLAND-FLOW; WESTERN US; REPELLENCY; EROSION; TOPMODEL; WILDFIRE; INFILTRATION;

D O I：

10.1016/j.envsoft.2019.104555

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Runoff increases after wildfires that burn vegetation and create a condition of soil-water repellence (SWR). A new post-fire watershed hydrological model, PFHydro, was created to explicitly simulate vegetation interception and SWR effects for four burn severity categories: high, medium, low severity and unburned. The model was applied to simulate post-fire runoff from the Upper Cache Creek Watershed in California, USA. Nash-Sutcliffe modeling efficiency (NSE) was used to assess model performance. The NSE was 0.80 and 0.88 for pre-fire water years (WY) 2000 and 2015, respectively. NSE was 0.88 and 0.93 for WYs 2016 (first year post-fire) and 2017 respectively. The simulated percentage of surface runoff in total runoff of WY 2016 was about six times that of pre-fire WY 2000 and three times that of WY 2015. The modeling results suggest that SWR is an important factor for post-fire runoff generation. The model was successful at simulating SWR behavior.

引用

页数：15

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